Rexroth A2F Series A2FE A2FE107 A2FE125 A2FE160 A2FE180 Hydraulic Motor High Speed Axial Piston Hydraulic motor
- Fixed plug-in motor with axial tapered piston rotary group of bent-axis design, for hydrostatic drives in open and closed
- Far-reaching integration in mechanical gearbox due to recessed mounting flange located in the center of the case
- The output speed is dependent on the flow of the pump and the displacement of the motor
- The output torque increases with the pressure differential between the high-pressure and the low-pressure side.
Technical Analysis of A2FE180 Axial Piston Variable Motor
(Based on Bosch Rexroth A2FE Series Standard Specifications and Industry Applications)
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1. Product Positioning & Core Functions
TheA2FE180is aclosed-loop axial piston variable motorfrom Bosch Rexroth'sA2FE Series, designed for heavy-duty applications. It is widely used in hydraulic drive systems requiringhigh torque output, high efficiency, and rapid responsiveness, such as construction machinery, agricultural equipment, and marine propulsion.
• Core Functions:
• Converts hydraulic energy into mechanical energy to drive loads (e.g., tracks, wheels, winches).
• Variable displacement control: Enables stepless adjustment of displacement via swashplate angle modulation to match load demands.
• Bidirectional rotation: Supports forward/reverse operation for versatile applications.
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2. Key Technical Parameters (Typical Values)
【表格】
Parameter A2FE180 Specifications Notes
Displacement Range 180 mL/rev (fixed displacement) Confirm if variable displacement model (e.g., A2FE180W) is required.
Max. Operating Pressure 450 bar (continuous) / 500 bar (peak) Suitable for high-pressure hydraulic systems (e.g., paired with A10VO pumps).
Max. Speed 3,600 rpm (continuous) Short-term peak speed up to 4,000 rpm.
Max. Torque 1,200 N·m (@180 mL/rev, 350 bar) Torque varies linearly with displacement and pressure.
Control Method Hydraulic pilot control (HA), electro-proportional control (HD) Supports remote automation.
Efficiency Volumetric efficiency ≥95%, total efficiency ≥90% Optimized design reduces energy loss.
Weight ~120 kg (including housing and shaft) Compact design for easy integration.
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3. Core Technical Advantages
• High Power Density:
Delivers high torque in a compact structure (e.g., 1,200 N·m at 180 mL/rev and 350 bar, suitable for heavy-duty tracked vehicle drives).
• Precise Control:
• Variable displacement enablesstepless regulation of flow/speedto adapt to load variations (e.g., excavator slewing motions).
• Electro-proportional control (HD type) supports seamless integration with PLC or remote control systems for enhanced automation.
• High Reliability:
• Useshigh-strength bearingsandspecial sealing technologyto withstand high-impact, high-contamination conditions (e.g., mining machinery).
• Optimized piston pair design reduces wear and extends service life.
• Strong Compatibility:
• Forms a closed-loop hydraulic system with Bosch Rexroth'sA4VSO variable pumpsfor efficient energy recovery (e.g., in crane luffing mechanisms).
• Supports multiple mounting options (flange, shaft extension) to adapt to different equipment structures.
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4. Typical Applications
• Construction Machinery:
• Excavator slewing drives, tracked vehicle drives (e.g., Cat 320D excavators).
• Loader work device drives.
• Agricultural Machinery:
• Combine harvester travel drives, forage harvester header drives.
• Marine Propulsion:
• Hydraulic propulsion systems for small vessels (e.g., workboats, patrol boats).
• Industrial Equipment:
• Winches, hoists, injection molding machine clamping units.
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5. Selection Considerations
• Displacement Selection:
• Determine displacement based on load torque requirements (e.g., A2FE180 has a fixed displacement of 180 mL/rev; select A2FE180W for variable displacement).
• Pressure Matching:
• Ensure system operating pressure does not exceed the motor's rated pressure (450 bar peak for A2FE180).
• Speed Matching:
• Avoid prolonged overspeed operation (>3,600 rpm) to prevent premature wear.
• Control Method:
• Choose control type (manual, hydraulic pilot, electro-proportional) based on automation needs.
• Oil Requirements:
• Use anti-wear hydraulic oil compliant with ISO VG 46 and regularly monitor oil cleanliness (NAS 1638 ≤ Class 9).
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6. Maintenance & Troubleshooting
【表格】
Symptom Possible Causes Solutions
Abnormal noise Bearing wear, piston seizure Replace bearings, clean piston pairs.
Insufficient output torque Insufficient system pressure, improper displacement adjustment Check hydraulic pump pressure, adjust swashplate angle.
Excessive oil temperature Cooling system failure, excessive load Inspect radiator, optimize system design.
Leakage
Aged seals, damaged oil seals
Replace seals, check mounting accuracy.
